Have you contacted Toyin? I haven't dealt with him personally, but I would think he would be able to let you know what they fed him and be able to give you some advice.
hey Toyin is a great seller of fish do not think that this has anything to do with him i just got one very picky congi,, I would hate for someone to read this and second guess getting anything from him.
Well Time for another update it has been 5-6 months now and my congi is looking great he is just under 14in atmand looks tiny when he sits next to my endli